Why did the Xiaomi 15 previously have network access with the SIM card, but now there is no signal?
The Xiaomi 15 does not support CDMA (Band: CDMA 1X BC0) and cannot use 2G networks. If there is no 5G or 4G network coverage in the current location, the phone will not be able to access a signal. This could be the reason why your device is showing no signal now, even though it worked previously. To resolve this, please ensure that your SIM card supports 4G or 5G and that the area you are in has proper coverage for those networks. If you are in an area with only 2G or CDMA network coverage, the Xiaomi 15 will not be able to connect.
Additionally, for phones that support CDMA, if there is no 5G or 4G coverage but 2G (CDMA) is available, they can still fall back to the 2G network.
Additionally, for phones that support CDMA, if there is no 5G or 4G coverage but 2G (CDMA) is available, they can still fall back to the 2G network.
Does it help?
Yes
No